JP4918066B2 - スイッチング電源装置 - Google Patents
スイッチング電源装置 Download PDFInfo
- Publication number
- JP4918066B2 JP4918066B2 JP2008146436A JP2008146436A JP4918066B2 JP 4918066 B2 JP4918066 B2 JP 4918066B2 JP 2008146436 A JP2008146436 A JP 2008146436A JP 2008146436 A JP2008146436 A JP 2008146436A JP 4918066 B2 JP4918066 B2 JP 4918066B2
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- Japan
- Prior art keywords
- voltage
- current
- output
- power supply
- detection voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001514 detection method Methods 0.000 claims description 46
- 239000003990 capacitor Substances 0.000 claims description 25
- 230000007423 decrease Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000004904 shortening Methods 0.000 description 4
- 230000005669 field effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Dc-Dc Converters (AREA)
Description
22 電流検出器
23 誤差増幅器
24 比較器
25 発振器(OSC)
26 フリップフロップ
I1 負荷電流
I2 チョークコイル電流
E 直流電源
Q1 スイッチング素子
D1 ダイオード
L1 チョークコイル
C1〜C3 コンデンサ
L1 チョークコイル
R1〜R4 抵抗
RL 負荷
SW ソフトスタートスイッチ
Vref 基準電源電圧
Vin 入力電圧
Vout 出力電圧
V1 電流検出電圧
V2 誤差電圧
V3 出力検出電圧
Claims (1)
- 負荷に印加する出力電圧を検出した出力検出電圧と基準電圧とを誤差増幅器に入力して求めた誤差分と、スイッチング素子によりオン、オフ制御した電流をチョークコイルを介して前記負荷に供給すると共に、該電流を検出して電圧に変換した電流検出電圧とを比較器により比較し、差分に対応して前記スイッチング素子のオン期間を制御するカレントモード制御回路と、前記基準電圧を起動時に徐々に上昇させるソフトスタート回路とを含むスイッチング電源装置に於いて、
前記電流検出電圧を入力する前記比較器の端子と前記出力検出電圧を入力する前記誤差増幅器の端子との間に抵抗とコンデンサとの直列回路を接続した構成を備えた
ことを特徴とするスイッチング電源装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008146436A JP4918066B2 (ja) | 2008-06-04 | 2008-06-04 | スイッチング電源装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008146436A JP4918066B2 (ja) | 2008-06-04 | 2008-06-04 | スイッチング電源装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009296748A JP2009296748A (ja) | 2009-12-17 |
JP4918066B2 true JP4918066B2 (ja) | 2012-04-18 |
Family
ID=41544344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008146436A Active JP4918066B2 (ja) | 2008-06-04 | 2008-06-04 | スイッチング電源装置 |
Country Status (1)
Country | Link |
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JP (1) | JP4918066B2 (ja) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3405871B2 (ja) * | 1995-11-28 | 2003-05-12 | 富士通株式会社 | 直流−直流変換制御回路および直流−直流変換装置 |
JP2002281742A (ja) * | 2001-03-22 | 2002-09-27 | Densei Lambda Kk | カレントモードdc/dcコンバータ |
JP4293350B2 (ja) * | 2003-07-04 | 2009-07-08 | 新電元工業株式会社 | スイッチング電源 |
JP2006254577A (ja) * | 2005-03-10 | 2006-09-21 | Matsushita Electric Ind Co Ltd | Dc−dcコンバータ |
JP2008104285A (ja) * | 2006-10-18 | 2008-05-01 | Ac Technologies Kk | スイッチング電源方式 |
-
2008
- 2008-06-04 JP JP2008146436A patent/JP4918066B2/ja active Active
Also Published As
Publication number | Publication date |
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JP2009296748A (ja) | 2009-12-17 |
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